Chapter Two Test Vocab Flashcards Preview

Science > Chapter Two Test Vocab > Flashcards

Flashcards in Chapter Two Test Vocab Deck (106)
Loading flashcards...
0

Organisms

Living things that are very different but all share 6 of the same characteristics

1

Unicellular

An organism made up of one cell (ex: bacteria)

2

Multicellular

An organism made up of more than one cell (ex: me)

3

Name the 6 characteristics of life

Made of cells Made of similar chemicals Uses energy Grows and develops Responds to the world around them Reproduces

4

Name the 4 basic needs of life

Need water Needs energy Needs living space Needs stable internal conditions

5

Development

The process of change during life to become a more complex organism

6

Stimulus

A change in an organism's surroundings that causes the organism to react

7

Response

An action or change in behavior

8

Reproduce

To produce offspring that are similar to the parents

9

Growth

The process of becoming larger

10

Spontaneous generation

The mistaken idea that living organisms rise from non-living objects

11

Autotrophs

Organisms that get their energy from the sun

12

Heterotrophs

Organisms that get their energy from food

13

Homeostasis

Maintaining stable internal conditions

14

Francisco Redi

A scientist who helped disprove spontaneous generation

15

Louis Pasteur

The scientist who ultimately disproved spontaneous generation

16

State the 3 parts of the cell theory

1) All living things come from cells 2) All living things are made of cells 3) Cells are the basic unit of structure in all living things

17

Who was Robert Hooke?

•English scientist and inventor •One of the first people to observe cells •1663 he observed the cells of a slice of cork through a compound microscope he built himself •Hooke called them cells because they reminded him of tiny rectangular rooms

18

Who was Anton van Leuwenhoek?

•Amateur scientist who made his own lenses and constructed simple microscopes •First person to spot tiny single-celled organisms that we call bacteria. He first noticed these organisms on teeth scrapings. •Called them animacules.

19

Who were Schleiden and Shwan?

•Shleiden and Schwann’s observations that all plants were made of cells and all animals were made of cells led to: “All living things are made of cells.”

20

Who was Rudolph Virchow?

•Virchow proposed that new cells are formed ONLY from cells that already exist. This led to: “All cells come from cells.”

21

Cells

Basic unit of structure and function in all living things

22

Body of a microscope

Support the eyepiece

23

Nosepiece

Holds objective lenses, magnifies by low, medium, and high power.

24

Objectives

High- 40x Medium- 10x Low- 4x

25

Stage Clips

Holds the slide in place

26

Diaphragm

Wheel under stage, adjusts how much light is allowed

27

Light source

Located under stage and diaphragm, source of light

28

Eyepiece

The lens looked through, magnifies specimen 10 X

29

Aperture

Allows light through to brighten image of specimen